Given that f(x)=x^2-4x-3 and g(x)= x+3/4, solve for f(g(x)) when x=9.

f(g(x)) when x=9 would be -129/4

Step-by-step explanation:

First, you split the parts into two.

f(g(x)) and g(x). *Think of g(x) as the y of f, f(y).

Now you solve for g(x), where you would plug in 9, for the x.

(9)+3/4 which equals, 39/4.

Now you have solved for g(x), and you have to plug it into the "y" of f.

f(y) = y^2-4y-3

f(39/4) = (39/4)^2-4(39/4)-3

f(39/4) = -129/4

Your solution should be -129/4.

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step-by-step explanation:

they would have to work 32 hours.